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MCQs

Total Questions : 152 | Page 8 of 16 pages
Question 71. Electronic voltmeters are not accurate.
  1.    True
  2.    False
  3.    May be True or False
  4.    Can't say
 Discuss Question
Answer: Option B. -> False
Answer: (b).False
Question 72. Dynamic range of electronic voltmeter is __________
  1.    zero
  2.    limited
  3.    narrow
  4.    wide
 Discuss Question
Answer: Option D. -> wide
Answer: (d).wide
Question 73. Electronic voltmeters are ____________
  1.    measure high level signals
  2.    measure low level signals
  3.    measure medium level signals
  4.    don’t measure any signal
 Discuss Question
Answer: Option B. -> measure low level signals
Answer: (b).measure low level signals
Question 74. Electronic voltmeters are __________
  1.    dependent of frequency
  2.    dependent of voltage
  3.    independent of frequency
  4.    dependent of current
 Discuss Question
Answer: Option C. -> independent of frequency
Answer: (c).independent of frequency
Question 75. Loading effect in electronic voltmeters is __________
  1.    nil
  2.    high
  3.    low
  4.    medium
 Discuss Question
Answer: Option A. -> nil
Answer: (a).nil
Question 76. Accuracy of a potentiometric DVM is ________
  1.    zero
  2.    medium
  3.    low
  4.    high
 Discuss Question
Answer: Option D. -> high
Answer: (d).high
Question 77. Feedback voltage is applied to the ________
  1.    comparator
  2.    error amplifier
  3.    potentiometer
  4.    sliding contact
 Discuss Question
Answer: Option A. -> comparator
Answer: (a).comparator
Question 78. Why is dual slope method preferred over ramp techniques?
  1.    no noise
  2.    partial noise
  3.    average noise
  4.    maximum noise
 Discuss Question
Answer: Option A. -> no noise
Answer: (a).no noise
Question 79. Output of the comparator is known as ________
  1.    amplified signal
  2.    error signal
  3.    feedback signal
  4.    attenuated signal
 Discuss Question
Answer: Option B. -> error signal
Answer: (b).error signal
Question 80. Slider movement depends on ________
  1.    current magnitude
  2.    resistance magnitude
  3.    voltage magnitude
  4.    power magnitude
 Discuss Question
Answer: Option C. -> voltage magnitude
Answer: (c).voltage magnitude

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